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  1. 使用 C# 從數據庫文件中提取數據

    數據庫 被認為是大多數應用程序的組成部分。無論是桌面、Web 還是移動應用程序，數據庫在存儲、訪問和操作數據方面都起著至關重要的作用。有許多數據庫管理系統可以為您創建和管理數據庫。 但是，可能會出現這樣一種情況，即您需要一種方法來從數據庫文件(即 .db 文件)中提取數據，而無需安裝數據庫管理系統或編寫 SQL 查詢。在這種情況下，您將如何解析數據庫文件並從中獲取數據？ 在本文中，我將演示如何在不編寫 SQL 查詢的情況下輕鬆地從 SQLite 數據庫中的表中提取數據。我將使用 GroupDocs.Parser for .NET API，它支持通過 ADO.NET。 從 SQLite 數據庫 (.db) 中的表中提取數據的步驟 在 Visual Studio 中創建一個新項目。 從 NuGet 安裝適用於 GroupDocs.Parser for .NET。 添加以下命名空間。 using System; using System.Collections.Generic; using System.IO; using GroupDocs.Parser.Data; using GroupDocs.Parser.Options; 準備連接字符串。 string connectionString = string.Format("Provider=System.Data.Sqlite;Data Source={0};Version=3;", "sqlite.db"); 在 Parser 對像中加載數據庫文件。 using (Parser parser = new Parser(connectionString, new LoadOptions(FileFormat.Database))) { // 你的代碼在這裡 } 使用 Parser.GetToc 方法獲取數據庫中表的列表。 // 獲取表格列表 IEnumerable toc = parser....Value)) { Console.WriteLine(reader...parser.GetText(i.PageIndex.Value)) { Console.WriteLine(reader...

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  2. Get comparison result as an object model | Grou...

    Retrieve the comparison result as a GroupDocs.Comparison Document object to inspect changes or pass the result stream to Aspose.Words for further manipulation....method and assign its return value to a object. You can retrieve...Thank you for your feedback! We value your opinion. Your feedback...

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  3. Running in Docker | GroupDocs

    Learn how to run GroupDocs.Total for .NET in Docker containers with complete examples, troubleshooting tips, and best practices for document processing in containerized environments....EnableUnixSupport" Value= "true" /> </ItemGroup> or you...Drawing.EnableUnixSupport" Value= "true" /> </ItemGroup> <ItemGroup>...

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  4. オンラインで QR コードをスキャン |画像とカメラを使用した QR コードのスキャン

    オンラインで QR コードをスキャンします。 QRコード画像をスキャンし、カメラを使用してスキャンします。 C# と Java を使用してプログラムで QR コードをスキャンする方法についても説明します。...CodeTypeName +" Code Value: " + barcode.Value); } } C# を使用した QR...WriteLine(barcode.getCodeTypeName() +" Code Value: " + barcode.getValue()); }...

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  5. Tips for using the GreenSock Animation Platform

    GreenSock Animation Platform (GSAP) for JavaScript I have always had a sort of passion for the special effects presented in today’s multi-media. I’ve experience with a lot of different types of effects. From the credits at the end of a TV show, subtitles, and karaoke effects. The last type, that I still work with, are the CSS3 animations which are now one of the most used trend to achieve effects and interactivity on the modern web....object’s property from one value to another . GroupDocs Code...(Object): {property1: value, property2: value} Heads up for this...

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  6. Working with metadata in Matroska (MKV) files |...

    Reading matroska format-specific properties The GroupDocs.Metadata API supports extracting format-specific information from MKV files. The following are the steps to read native MKV metadata. Load an MKV video Get the root metadata package Extract the native metadata package using MatroskaRootPackage.MatroskaPackage Read the Matroska metadata properties on different levels of the format structure AdvancedUsage.ManagingMetadataForSpecificFormats.Video.Matroska.MatroskaReadNativeMetadataProperties using (Metadata metadata = new Metadata(Constants.InputMkv)) { var root = metadata.GetRootPackage(); // Read the EBML header Console.... WriteLine ( "Value: {0}" , simpleTag . Value ); } } // Read...Thank you for your feedback! We value your opinion. Your feedback...

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  7. How to edit Mobi file | GroupDocs

    This article demonstrates how to edit Mobi files using C# programming language....extension can have a Mobi or Azw3 value. property returns an approximate...property always returns a false value, because Mobi documents cannot...

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  8. How to Run Examples | GroupDocs

    In this article, you can find how to run examples. We offer multiple solutions on how you can run GroupDocs.Parser examples, by building your own or using our back-end examples out-of-the-box.... value } " ) if __name__ == "__main__"...Thank you for your feedback! We value your opinion. Your feedback...

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  9. Generate document page preview | GroupDocs

    The page describes how to generate PDF, Word, Excel, PowerPoint documents thumbnails and preview document pages using GroupDocs.Annotation for Java API.... The RenderComments value impacts any document comments...Thank you for your feedback! We value your opinion. Your feedback...

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  10. Konvertieren Sie Excel- und CSV-Daten in C# | X...

    Konvertieren Sie XLS und XLSX in CSV- und CSV in Excel-Formate innerhalb von Java-Anwendungen. Automatisieren Sie Ihre Dateikonvertierung mit der Java-API für die Dokumentenkonvertierung....outputFile = @"path/comma-sparated-values.csv"; using (Converter converter...inputFile = @"path/comma-sparated-values.csv"; string outputFile = @"path/spreadsheet...

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